Fixed #16490 -- Skipped a test failure that only occurs under Python 2.6.1...

    # are swallowed (Python issue 1242657), so these cases return an empty

    # list, rather than raising an exception. Not a lot we can do about that,

    # unfortunately, due to the way Python handles list() calls internally.

    # Thus, we skip this test for Python 2.6.

    # Python 2.6.1 is the "in the wild" version affected by this, so we skip

    # the test for that version.

    @requires_threading

    @skipUnlessDBFeature('has_select_for_update_nowait')

    @unittest.skipIf(sys.version_info[:2] == (2, 6), "Python version is 2.6")

    @unittest.skipIf(sys.version_info[:3] == (2, 6, 1), "Python version is 2.6.1")

    def test_nowait_raises_error_on_block(self):

        """

        If nowait is specified, we expect an error to be raised rather

        self.end_blocking_transaction()

        self.check_exc(status[-1])

    # In Python 2.6 beta and some final releases, exceptions raised in __len__

    # are swallowed (Python issue 1242657), so these cases return an empty

    # list, rather than raising an exception. Not a lot we can do about that,

    # unfortunately, due to the way Python handles list() calls internally.

    # Python 2.6.1 is the "in the wild" version affected by this, so we skip

    # the test for that version.

    @skipIfDBFeature('has_select_for_update_nowait')

    @skipUnlessDBFeature('has_select_for_update')

    @unittest.skipIf(sys.version_info[:3] == (2, 6, 1), "Python version is 2.6.1")

    def test_unsupported_nowait_raises_error(self):

        """

        If a SELECT...FOR UPDATE NOWAIT is run on a database backend